Why does a box appear for students when they click on the "Module" button?

To allow students to interact with a module and module items, you must publish the module. The status of the Module overrides the state of module items. If an item is published within an unpublished module, students cannot view the item in the Modules page.

KaLynn ClarkWelcome to the Canvas Community! From your description, it sounds like you're using a Free for Teachers account for this course. Free for Teachers courses currently incorporate tool tips for various commonly-used Canvas features, and that one was designed to appear in the instructor's view only. We're going to get that fixed, post-haste. Thank you for bringing it to our attention.

KaLynn ClarkWelcome to the Canvas Community! From your description, it sounds like you're using a Free for Teachers account for this course. Free for Teachers courses currently incorporate tool tips for various commonly-used Canvas features, and that one was designed to appear in the instructor's view only. We're going to get that fixed, post-haste. Thank you for bringing it to our attention.